Question: What was the last year that Charlemagne and Desiderata of the Lombards were married?
Paraphrase: Which year was the last year of marriage between Charlemagne and Desiderata of the Lombards ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q3044 p:P26 ?s . ?s ps:P26 wd:Q263474 . ?s pq:P582 ?value}